Bump System.Collections.Immutable from 6.0.1 to 10.0.8

---
updated-dependencies:
- dependency-name: System.Collections.Immutable
  dependency-version: 10.0.8
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -12,7 +12,7 @@
 		<PackageVersion  Include="NUnit3TestAdapter" Version="4.5.0" />
 		<PackageVersion  Include="RichardSzalay.MockHttp" Version="6.0.0" />
 		<PackageVersion  Include="SimpleLogInterface" Version="3.0.1" />
-		<PackageVersion  Include="System.Collections.Immutable" Version="6.0.0" />
+		<PackageVersion  Include="System.Collections.Immutable" Version="10.0.8" />
 		<PackageVersion  Include="System.IdentityModel.Tokens.Jwt" Version="6.36.0" />
 		<PackageVersion  Include="System.Text.Json" Version="8.0.4" />
 	</ItemGroup>